Borrowings (Details) $ in Thousands	Oct. 31, 2015 USD ($) Note
Line of Credit [Member]
Debt Instrument [Line Items]
Number of lines of credit | Note	1
Unused line	$ 2,272,000
Line of Credit Facility, Maximum Borrowing Capacity	5,000
Line of credit facility borrowing capacity	$ 5,000
Line of Credit 1 [Member]
Debt Instrument [Line Items]
Number of lines of credit | Note	1
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000
Line of credit facility borrowing capacity	$ 1,000
Line of Credit 2 [Member]
Debt Instrument [Line Items]
Number of lines of credit | Note	1
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,500
Line of credit facility borrowing capacity	$ 2,500
Line of Credit 3 [Member]
Debt Instrument [Line Items]
Number of lines of credit | Note	1
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000
Line of credit facility borrowing capacity	1,000
Notes Collateralized by Aircraft Security Agreements [Member]
Debt Instrument [Line Items]
Notes payable	1,060
Notes Payable to Bank [Member]
Debt Instrument [Line Items]
Notes payable	$ 1,000
Number of notes | Note	3
Notes for Real Estate [Member]
Debt Instrument [Line Items]
Notes payable	$ 299
Number of notes | Note	1
Notes Collateralized by Automobiles and Equipment [Member]
Debt Instrument [Line Items]
Notes payable	$ 23
BHCMC Lottery Gaming Machines [Member]
Debt Instrument [Line Items]
Notes payable	$ 610
Number of notes | Note	1
Second Obligation With BHCI [Member]
Debt Instrument [Line Items]
Notes payable	$ 1,557
Number of notes | Note	1
Face value of note entered	$ 2,500
Second BHCI Obligation Payment	$ 55
Obligation With BHCI [Member]
Debt Instrument [Line Items]
Number of notes | Note	1
First Obligation With BHCI [Member]
Debt Instrument [Line Items]
Face value of note entered
First BHCI Obligation Payment
Note collateralized by BNSC's assets and compensation due under State Mgmt Contract [Member]
Debt Instrument [Line Items]
Notes payable	$ 5,104